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A Method for High Fidelity Optogenetic Control of Individual Pyramidal Neurons In vivo
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Developing Optogenetic Approaches to Study Ca2+ Signaling Processes.

Tatsuki Nonomura1, Xiaoxuan Liu1, Megan Chiu1

  • 1Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University, Houston, Texas 77030, USA.

Cold Spring Harbor Perspectives in Biology
|November 3, 2025
PubMed
Summary
This summary is machine-generated.

New optogenetic tools, light-sensitive calcium actuators and modulators (LiCAMs), precisely control calcium ion (Ca2+) signaling. These advanced methods offer noninvasive control of Ca2+-modulated processes for studying diseases and developing therapies.

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Area of Science:

  • Molecular Biology
  • Cellular Physiology
  • Biotechnology

Background:

  • Calcium ions (Ca2+) are vital second messengers regulating diverse biological processes.
  • Disrupted Ca2+ signaling is linked to numerous human diseases, including cardiovascular and neurological disorders.
  • Traditional methods for studying Ca2+ signaling lack precise spatiotemporal control.

Purpose of the Study:

  • To review advancements in optogenetic tools for Ca2+ signaling research.
  • To explore the design and engineering principles of light-sensitive calcium actuators and modulators (LiCAMs).
  • To highlight the applications of LiCAMs in controlling Ca2+-modulated physiological processes.

Main Methods:

  • Focuses on non-opsin-based optogenetics, particularly engineered Ca2+ release-activated Ca2+ (CRAC) channels.
  • Examines the principles behind designing and engineering light-sensitive calcium actuators and modulators (LiCAMs).
  • Reviews the application of LiCAMs for remote and noninvasive control of Ca2+ signaling.

Main Results:

  • Recent progress in non-opsin optogenetics has significantly enhanced the study of Ca2+ signaling mechanisms.
  • Engineered LiCAMs provide precise spatiotemporal control over Ca2+ signaling pathways.
  • These tools enable effective manipulation of downstream signaling events for therapeutic exploration.

Conclusions:

  • LiCAMs represent a significant advancement in optogenetic tools for studying Ca2+ signaling.
  • These tools offer novel therapeutic avenues by enabling precise control of Ca2+-modulated physiological processes.
  • Optogenetics provides powerful, noninvasive methods for investigating Ca2+-related diseases and interventions.